655614901 has 2 divisors, whose sum is σ = 655614902. Its totient is φ = 655614900.

The previous prime is 655614881. The next prime is 655614913. The reversal of 655614901 is 109416556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 622552401 + 33062500 = 24951^2 + 5750^2 .

It is a cyclic number.

It is not a de Polignac number, because 655614901 - 2¹³ = 655606709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655614941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327807450 + 327807451.

It is an arithmetic number, because the mean of its divisors is an integer number (327807451).

Almost surely, 2^655614901 is an apocalyptic number.

It is an amenable number.

655614901 is a deficient number, since it is larger than the sum of its proper divisors (1).

655614901 is an equidigital number, since it uses as much as digits as its factorization.

655614901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 655614901 is about 25604.9780511525. The cubic root of 655614901 is about 868.7262379091.

The spelling of 655614901 in words is "six hundred fifty-five million, six hundred fourteen thousand, nine hundred one".